prysm-pulse/beacon-chain/sync/subscriber_handlers.go
kevlu93 eca67cec4c
Embed Config Pattern for Sync Services (#8636)
Co-authored-by: terence tsao <terence@prysmaticlabs.com>
2021-03-21 19:07:42 +00:00

72 lines
2.5 KiB
Go

package sync
import (
"context"
"fmt"
"github.com/gogo/protobuf/proto"
"github.com/pkg/errors"
ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
)
func (s *Service) voluntaryExitSubscriber(ctx context.Context, msg proto.Message) error {
ve, ok := msg.(*ethpb.SignedVoluntaryExit)
if !ok {
return fmt.Errorf("wrong type, expected: *ethpb.SignedVoluntaryExit got: %T", msg)
}
if ve.Exit == nil {
return errors.New("exit can't be nil")
}
s.setExitIndexSeen(ve.Exit.ValidatorIndex)
headState, err := s.cfg.Chain.HeadState(ctx)
if err != nil {
return err
}
s.cfg.ExitPool.InsertVoluntaryExit(ctx, headState, ve)
return nil
}
func (s *Service) attesterSlashingSubscriber(ctx context.Context, msg proto.Message) error {
aSlashing, ok := msg.(*ethpb.AttesterSlashing)
if !ok {
return fmt.Errorf("wrong type, expected: *ethpb.AttesterSlashing got: %T", msg)
}
// Do some nil checks to prevent easy DoS'ing of this handler.
aSlashing1IsNil := aSlashing == nil || aSlashing.Attestation_1 == nil || aSlashing.Attestation_1.AttestingIndices == nil
aSlashing2IsNil := aSlashing == nil || aSlashing.Attestation_2 == nil || aSlashing.Attestation_2.AttestingIndices == nil
if !aSlashing1IsNil && !aSlashing2IsNil {
headState, err := s.cfg.Chain.HeadState(ctx)
if err != nil {
return err
}
if err := s.cfg.SlashingPool.InsertAttesterSlashing(ctx, headState, aSlashing); err != nil {
return errors.Wrap(err, "could not insert attester slashing into pool")
}
s.setAttesterSlashingIndicesSeen(aSlashing.Attestation_1.AttestingIndices, aSlashing.Attestation_2.AttestingIndices)
}
return nil
}
func (s *Service) proposerSlashingSubscriber(ctx context.Context, msg proto.Message) error {
pSlashing, ok := msg.(*ethpb.ProposerSlashing)
if !ok {
return fmt.Errorf("wrong type, expected: *ethpb.ProposerSlashing got: %T", msg)
}
// Do some nil checks to prevent easy DoS'ing of this handler.
header1IsNil := pSlashing == nil || pSlashing.Header_1 == nil || pSlashing.Header_1.Header == nil
header2IsNil := pSlashing == nil || pSlashing.Header_2 == nil || pSlashing.Header_2.Header == nil
if !header1IsNil && !header2IsNil {
headState, err := s.cfg.Chain.HeadState(ctx)
if err != nil {
return err
}
if err := s.cfg.SlashingPool.InsertProposerSlashing(ctx, headState, pSlashing); err != nil {
return errors.Wrap(err, "could not insert proposer slashing into pool")
}
s.setProposerSlashingIndexSeen(pSlashing.Header_1.Header.ProposerIndex)
}
return nil
}